Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

A classic American barn that was the home of a classic American television star.

This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.

Guns that have been defending San Francisco since 1904.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

An airy would-be solution to a housing shortage.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

Massive prehistoric mammals used these stones as oversized scratching posts.

The set location for a 1987 cult classic draws international film buffs to the middle of the Mojave Desert.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

This rock formation named for its unique shape is one of many that call the Alabama Hills home.

A natural dome made of volcanic glass in Inyo National Forest.

The 10-foot-wide Long Beach home was built on a dare.

A working miniature city designed to teach kids about safety and presumably city planning.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

A large sculptural artwork and garden in Escondido, California.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

California's oldest wind harp represents a historic piece of America's Danish history.

The taxidermied remains of the "last wild grizzly bear in California" and of the symbol of the state of California.

Here, visitors can swing with the waves of the Pacific Ocean.